Meaning of perturb

per•turb

Pronunciation: (pur-tûrb'), [key]
— v.t.
  1. to disturb or disquiet greatly in mind; agitate.
  2. to throw into great disorder; derange.
  3. to cause perturbation in the orbit of (a celestial body).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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